Skeletor tricks He-Man into believing he accidentally killed a man. Distraught, Adam decides to give up being He-Man and throws the Powersword into Grayskull's abyss.
Teela tries to mix training with fun in order for Adam to become more interested in his studies. But one of her tests goes too far and she ends up falling into the Abyss around Grayskull.
Man-At-Arms recounts how Adam found Cringer when they were both still young, and how Cringer first became Battlecat during a battle against the dreaded Gedge.
Skeletor sends Zoar to another world, not realizing she is really the Sorceress. The Spirit of Grayskull calls for help and implores Teela to take the Sorceress' place.
As much as she loves Man-At-Arms, Teela has always been curious about who her real mother and father were. She seeks the Oracle of the Crystal Sea for answers. Unfortunately, the Crystal Sea is Mer-Man's territory.
Skeletor kidnaps King Randor, Prince Adam, Teela, Man-At-Arms, and Orko in order to have the Royal Guards become leaderless. But Queen Marlena may prove to be a more worthy leader than everyone else believes.
Skeletor brings an evil demon called Sh'Gora to Eternia, who overcomes Skeletor. He-Man and his comrades have no choice but to work together with Skeletor in banishing the demon from Eternia before it is too late.
He-Man discovers a statue called, the Grimalken, from the temple of the Cat Folk. But a young feline, Katrina, warns him that it contains a imprisoned demon.
The Sorceress realizes her old enemy Morgoth is attempting to return to Eternia. She decides to make a stand, and tells He-Man how her first battle against Morgoth caused her to take up the mantle of Sorceress of Grayskull.